.nav .list-wrap {
    align-items: center;
}

.nav .list-wrap li {
    font-size: 16px;
    font-weight: 700;
}

.nav .list-wrap .buy_now {
    font-size: 13px;
    font-weight: 400;
    border: 1px solid #000;
    border-radius: 3px;
    width: 70px;
    text-align: center;
    line-height: 28px;
    font-weight: 600;
}

.nav .list-wrap .buy_now:hover a {
    /* text-decoration: underline; */
    box-shadow: 0 1px 0 #000
}

.understand {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    background-color: #0078d4;
    text-align: center;
    color: #fff;
    /* line-height: 45px; */
    padding: 10px;
    font-weight: 700;
    font-size: 14px;
}

.understand div:nth-child(2) {
    width: 120px;
    /* margin-left: 10px; */
}

.understand div:nth-child(2) span {
    transition: .3s;
}

.understand div:nth-child(2):hover span {
    box-shadow: 0 2px 0 #fff;
    margin-right: 5px;
}

.understand i {
    font-size: 12px;
}

/* 
.understand span:nth-child(2)::after {
    font-family: "iconfont";
    content: "\e603";
    font-size: 12px;
    position: absolute;
    font-weight: 400;
    margin-left: 5px;
} */

.imgnav {
    width: 100%;
    position: relative;
}

.imgnav .imglist {
    width: 100%;
    overflow: hidden;
}

.imgnav .imglist img {
    width: 100%;
    min-height: 300px;
    object-fit: cover;
    /* height: 440px;
    /* transform: scale(1.5); */
    /* transform: translateX(-100px) scale(1.2);
    display: block;  */
}

.imgnav .info {
    /* z-index: 9; */
    width: 100%;
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    text-align: center;
    /* display: flex; */
}

.imgnav .info h2 {
    font-size: 40px;
}

.imgnav .info h4 {
    font-size: 15px;
    margin: 10px 0 30px;
}

.imgnav .info .goodslist ul {
    width: 100%;
    max-width: 1280px;
    margin: auto;
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    box-sizing: border-box;
    padding: 0 10px;
}

.imgnav .info .goodslist ul li {
    transition: .3s;
    width: 22%;
    background-color: #0078d4;
    color: #fff;
    line-height: 40px;
    border: 2px solid #fff;
    box-shadow: 1px 1px 3px #0078d4, -1px -1px 3px #0078d4;
    opacity: .9;
}

.imgnav .info .goodslist ul li:hover {
    opacity: 1;
    background-color: #005a9f;
    box-shadow: 1px 1px 3px #666, -1px -1px 3px #666;
}

.imgnav .info .goodslist .login {
    font-size: 14px;
}

.imgnav .info .login a {
    font-weight: 700;
    color: #005a9f;
    text-decoration: underline;
}

.title {
    box-sizing: border-box;
    width: 100%;
    max-width: 1200px;
    margin: auto;
    text-align: center;
    padding: 100px 12px;
}

.title h2 {
    width: 100%;
    text-align: center;
    font-size: 36px;
}

.video {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 50px;
}

.video .video_w {
    overflow: hidden;
    position: relative;
    width: 100%;
    max-width: 1300px;
}

.video_w .bg {
    z-index: 2;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 99%;
    background-color: rgba(0, 0, 0, .2);
    /* opacity: .5; */
}

.video_w .bg .stop {
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50px;
    height: 50px;
    /* border: 1px solid #000; */
    border-radius: 50%;
    background-color: rgba(0, 0, 0, .6);
}

.video_w .bg span {
    display: inline-block;
    display: none;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -175%);
    width: 50px;
    text-align: center;
    line-height: 40px;
    color: #fff;
    background-color: black;
}

.video_w .bg .stop:hover~span {
    display: inline-block;
}

.video_w .bg .stop i {
    z-index: 9;
    color: #fff;
    font-size: 20px;
    font-style: normal;
}

.detail {
    box-sizing: border-box;
    width: 100%;
    background-color: #f5f5f5;
    padding: 140px 20px;
    margin-bottom: 100px;
}

.detail h4 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 60px;
}

.detail ul {
    width: 100%;
    max-width: 1280px;
    margin: auto;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.detail ul li {
    width: 20%;
    text-align: center;
    margin-bottom: 20px;
}

.detail ul li .img img {
    width: 45px;
    height: 45px;
}

.detail ul li .edition {
    font-size: 20px;
    font-weight: 700;
    margin: 16px 0;
}

.detail ul li .info {

    color: #0078d4;
    font-weight: 700;
}

.detail ul li .info a {
    transition: .3s;
    font-size: 16px;
    color: #0078d4;
    /* margin-right: 2px; */
}

.detail ul li .info i {
    font-size: 12px;
}

.detail ul li .info a:hover {
    box-shadow: 0 2px 0 #0078d4;
    margin-right: 5px;
}


@media screen and (max-width:600px) {
    .detail ul li {
        width: 46%;
    }
}